<?php
$globals['mysql_persistent'] = true;

// ==================================================================
//  Author: Justin Vincent (justin@visunet.ie)
//	Web: 	http://php.justinvincent.com
//	Name: 	ezSQL
// 	Desc: 	Class to make it very easy to deal with mySQL database connections.
//
// !! IMPORTANT !!
//
//  Please send me a mail telling me what you think of ezSQL
//  and what your using it for!! Cheers. [ justin@visunet.ie ]
//
// ==================================================================
// User Settings -- CHANGE HERE

// function _($s) {
// return $s;
// }

include_once (dirname(__FILE__) . '/dbconnect.php');

// ==================================================================
//	ezSQL Constants
define("EZSQL_VERSION", "1.26");
define("OBJECT", "OBJECT", true);
define("ARRAY_A", "ARRAY_A", true);
define("ARRAY_N", "ARRAY_N", true);

// ==================================================================
//	The Main Class

class db {

	var $trace = false; // same as $debug_all
	var $debug_all = false; // same as $trace
	var $show_errors = true;
	var $num_queries = 0;
	var $last_query;
	var $col_info;
	var $debug_called;
	var $vardump_called;

	// ==================================================================
	//	DB Constructor - connects to the server and selects a database

	function db($dbuser, $dbpassword, $dbname, $dbhost) {
		global $globals;

		if ($globals['mysql_persistent']) {
			$this->dbh = @ mysql_pconnect($dbhost, $dbuser, $dbpassword);
		} else {
			$this->dbh = @ mysql_connect($dbhost, $dbuser, $dbpassword);
		}

		if (!$this->dbh) {
			$this->print_error('<ol><b>Error establishing a database connection!</b><li>Are you sure you have the correct user/password?<li>Are you sure that you have typed the correct hostname?<li>Are you sure that the database server is running?</ol>');
			die;
		}

		$this->select($dbname);

	}

	// ==================================================================
	//	Select a DB (if another one needs to be selected)

	function select($db) {
		if (!@ mysql_select_db($db, $this->dbh)) {
			$this->print_error("<ol><b>Error selecting database <u>$db</u>!</b><li>Are you sure it exists?<li>Are you sure there is a valid database connection?</ol>");
			die;
		}
	}

	// ====================================================================
	//	Format a string correctly for safe insert under all PHP conditions

	function escape($str) {
		return mysql_escape_string(stripslashes($str));
	}

	// ==================================================================
	//	Print SQL/DB error.

	function print_error($str = "") {

		// All erros go to the global error array $EZSQL_ERROR..
		global $EZSQL_ERROR;

		// If no special error string then use mysql default..
		if (!$str) {
			$str = mysql_error($this->dbh);
			$error_no = mysql_errno($this->dbh);
		}

		// Log this error to the global array..
		$EZSQL_ERROR[] = array (
			"query" => $this->last_query,
			"error_str" => $str,
			"error_no" => $error_no
		);

		// Is error output turned on or not..
		if ($this->show_errors) {
			// If there is an error then take note of it
			print "<blockquote><font face=arial size=2 color=ff0000>";
			print "<b>SQL/DB Error --</b> ";
			print "[<font color=000077>$str</font>]";
			print "</font></blockquote>";
		} else {
			return false;
		}
	}

	// ==================================================================
	//	Turn error handling on or off..

	function show_errors() {
		$this->show_errors = true;
	}

	function hide_errors() {
		$this->show_errors = false;
	}

	// ==================================================================
	//	Kill cached query results

	function flush() {

		// Get rid of these
		$this->last_result = null;
		$this->col_info = null;
		$this->last_query = null;

	}

	// ==================================================================
	//	Basic Query	- see docs for more detail

	function query($query) {

		// For reg expressions
		$query = trim($query);

		// initialise return
		$return_val = 0;

		// Flush cached values..
		$this->flush();

		// Log how the function was called
		$this->func_call = "\$db->query(\"$query\")";

		// Keep track of the last query for debug..
		$this->last_query = $query;

		// Perform the query via std mysql_query function..
		$this->result = @ mysql_query($query, $this->dbh);
		$this->num_queries++;

		// If there is an error then take note of it..
		if (mysql_error()) {
			$this->print_error();
			return false;
		}

		// Query was an insert, delete, update, replace
		if (preg_match("/^(insert|delete|update|replace)\s+/i", $query)) {
			$this->rows_affected = mysql_affected_rows();

			// Take note of the insert_id
			if (preg_match("/^(insert|replace)\s+/i", $query)) {
				$this->insert_id = mysql_insert_id($this->dbh);
			}

			// Return number fo rows affected
			$return_val = $this->rows_affected;
		}
		// Query was an select
		else {

			// Take note of column info
			$i = 0;
			while ($i < @ mysql_num_fields($this->result)) {
				$this->col_info[$i] = @ mysql_fetch_field($this->result);
				$i++;
			}

			// Store Query Results
			$num_rows = 0;
			while ($row = @ mysql_fetch_object($this->result)) {
				// Store relults as an objects within main array
				$this->last_result[$num_rows] = $row;
				$num_rows++;
			}

			@ mysql_free_result($this->result);

			// Log number of rows the query returned
			$this->num_rows = $num_rows;

			// Return number of rows selected
			$return_val = $this->num_rows;
		}

		// If debug ALL queries
		$this->trace || $this->debug_all ? $this->debug() : null;

		return $return_val;

	}

	// ==================================================================
	//	Get one variable from the DB - see docs for more detail

	function get_var($query = null, $x = 0, $y = 0) {

		// Log how the function was called
		$this->func_call = "\$db->get_var(\"$query\",$x,$y)";

		// If there is a query then perform it if not then use cached results..
		if ($query) {
			$this->query($query);
		}

		// Extract var out of cached results based x,y vals
		if ($this->last_result[$y]) {
			$values = array_values(get_object_vars($this->last_result[$y]));
		}

		// If there is a value return it else return null
		return (isset ($values[$x]) && $values[$x] !== '') ? $values[$x] : null;
	}

	// ==================================================================
	//	Get one row from the DB - see docs for more detail

	function get_row($query = null, $output = OBJECT, $y = 0) {

		// Log how the function was called
		$this->func_call = "\$db->get_row(\"$query\",$output,$y)";

		// If there is a query then perform it if not then use cached results..
		if ($query) {
			$this->query($query);
		}

		// If the output is an object then return object using the row offset..
		if ($output == OBJECT) {
			return $this->last_result[$y] ? $this->last_result[$y] : null;
		}
		// If the output is an associative array then return row as such..
		elseif ($output == ARRAY_A) {
			return $this->last_result[$y] ? get_object_vars($this->last_result[$y]) : null;
		}
		// If the output is an numerical array then return row as such..
		elseif ($output == ARRAY_N) {
			return $this->last_result[$y] ? array_values(get_object_vars($this->last_result[$y])) : null;
		}
		// If invalid output type was specified..
		else {
			$this->print_error(" \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N");
		}

	}

	// ==================================================================
	//	Function to get 1 column from the cached result set based in X index
	// se docs for usage and info

	function get_col($query = null, $x = 0) {

		// If there is a query then perform it if not then use cached results..
		if ($query) {
			$this->query($query);
		}

		// Extract the column values
		for ($i = 0; $i < count($this->last_result); $i++) {
			$new_array[$i] = $this->get_var(null, $x, $i);
		}

		if (isset ($new_array)) {
			return $new_array;
		}
	}

	// ==================================================================
	// Return the the query as a result set - see docs for more details

	function get_results($query = null, $output = OBJECT) {

		// Log how the function was called
		$this->func_call = "\$db->get_results(\"$query\", $output)";

		// If there is a query then perform it if not then use cached results..
		if ($query) {
			$this->query($query);
		}

		// Send back array of objects. Each row is an object
		if ($output == OBJECT) {
			return $this->last_result;
		}
		elseif ($output == ARRAY_A || $output == ARRAY_N) {
			if ($this->last_result) {
				$i = 0;
				foreach ($this->last_result as $row) {

					$new_array[$i] = get_object_vars($row);

					if ($output == ARRAY_N) {
						$new_array[$i] = array_values($new_array[$i]);
					}

					$i++;
				}

				return $new_array;
			} else {
				return null;
			}
		}
	}

	// ==================================================================
	// Function to get column meta data info pertaining to the last query
	// see docs for more info and usage

	function get_col_info($info_type = "name", $col_offset = -1) {

		if ($this->col_info) {
			if ($col_offset == -1) {
				$i = 0;
				foreach ($this->col_info as $col) {
					$new_array[$i] = $col-> {
						$info_type };
					$i++;
				}
				return $new_array;
			} else {
				return $this->col_info[$col_offset]-> {
					$info_type };
			}

		}

	}

	// ==================================================================
	// Dumps the contents of any input variable to screen in a nicely
	// formatted and easy to understand way - any type: Object, Var or Array

	function vardump($mixed = '') {

		echo "<p><table><tr><td bgcolor=ffffff><blockquote><font color=000090>";
		echo "<pre><font face=arial>";

		if (!$this->vardump_called) {
			echo "<font color=800080><b>ezSQL</b> (v" . EZSQL_VERSION . ") <b>Variable Dump..</b></font>\n\n";
		}

		$var_type = gettype($mixed);
		print_r(($mixed ? $mixed : "<font color=red>No Value / False</font>"));
		echo "\n\n<b>Type:</b> " . ucfirst($var_type) . "\n";
		echo "<b>Last Query</b> [$this->num_queries]<b>:</b> " . ($this->last_query ? $this->last_query : "NULL") . "\n";
		echo "<b>Last Function Call:</b> " . ($this->func_call ? $this->func_call : "None") . "\n";
		echo "<b>Last Rows Returned:</b> " . count($this->last_result) . "\n";
		echo "</font></pre></font></blockquote></td></tr></table>" . $this->donation();
		echo "\n<hr size=1 noshade color=dddddd>";

		$this->vardump_called = true;

	}

	// Alias for the above function
	function dumpvar($mixed) {
		$this->vardump($mixed);
	}

	// ==================================================================
	// Displays the last query string that was sent to the database & a
	// table listing results (if there were any).
	// (abstracted into a seperate file to save server overhead).

	function debug() {

		echo "<blockquote>";

		// Only show ezSQL credits once..
		if (!$this->debug_called) {
			echo "<font color=800080 face=arial size=2><b>ezSQL</b> (v" . EZSQL_VERSION . ") <b>Debug..</b></font><p>\n";
		}
		echo "<font face=arial size=2 color=000099><b>Query</b> [$this->num_queries] <b>--</b> ";
		echo "[<font color=000000><b>$this->last_query</b></font>]</font><p>";

		echo "<font face=arial size=2 color=000099><b>Query Result..</b></font>";
		echo "<blockquote>";

		if ($this->col_info) {

			// =====================================================
			// Results top rows

			echo "<table cellpadding=5 cellspacing=1 bgcolor=555555>";
			echo "<tr bgcolor=eeeeee><td nowrap valign=bottom><font color=555599 face=arial size=2><b>(row)</b></font></td>";

			for ($i = 0; $i < count($this->col_info); $i++) {
				echo "<td nowrap align=left valign=top><font size=1 color=555599 face=arial>{$this->col_info[$i]->type} {$this->col_info[$i]->max_length}</font><br /><span style='font-family: arial; font-size: 10pt; font-weight: bold;'>{$this->col_info[$i]->name}</span></td>";
			}

			echo "</tr>";

			// ======================================================
			// print main results

			if ($this->last_result) {

				$i = 0;
				foreach ($this->get_results(null, ARRAY_N) as $one_row) {
					$i++;
					echo "<tr bgcolor=ffffff><td bgcolor=eeeeee nowrap align=middle><font size=2 color=555599 face=arial>$i</font></td>";

					foreach ($one_row as $item) {
						echo "<td nowrap><font face=arial size=2>$item</font></td>";
					}

					echo "</tr>";
				}

			} // if last result
			else {
				echo "<tr bgcolor=ffffff><td colspan=" . (count($this->col_info) + 1) . "><font face=arial size=2>No Results</font></td></tr>";
			}

			echo "</table>";

		} // if col_info
		else {
			echo "<font face=arial size=2>No Results</font>";
		}

		echo "</blockquote></blockquote>" . $this->donation() . "<hr noshade color=dddddd size=1>";

		$this->debug_called = true;
	}

	// =======================================================
	// Naughty little function to ask for some remuniration!

	function donation() {
		return "<font size=1 face=arial color=000000>If ezSQL has helped <a href=\"https://www.paypal.com/xclick/business=justin%40justinvincent.com&item_name=ezSQL&no_note=1&tax=0\" style=\"color: 0000CC;\">make a donation!?</a> &nbsp;&nbsp;[ go on! you know you want to! ]</font>";
	}

}

$db = new db(EZSQL_DB_USER, EZSQL_DB_PASSWORD, EZSQL_DB_NAME, EZSQL_DB_HOST);
$db->query("SET NAMES 'utf8'");
?>

